\begin{table}[H]\centering                  \def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}                   \caption{Resurfacing expenditure and IRI\label{tab:IRI_expenditure}}                 \setlength{\tabcolsep}{1pt}                                  \begin{tabular}{l*{7}{c}}\hline\hline
                &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         \\
\hline
\( \mathds{1}_{ist}(q)\imath^q_{st}\)&  -619.29\sym{***}&  -607.60\sym{***}&  -646.12\sym{***}&  -921.00\sym{***}&  -922.91\sym{***}&  -992.86\sym{***}\\
                &  (38.80)         &  (38.07)         &  (41.90)         &  (93.70)         &  (92.92)         & (104.83)         \\
$ t $           &                  &                  &                  &    -0.02         &    -0.02         &     0.00         \\
                &                  &                  &                  &   (0.07)         &   (0.07)         &   (0.08)         \\
$ \mathds{1}_{ist}(q)\imath^q_{st}\times t$&                  &                  &                  &    27.46\sym{***}&    27.29\sym{***}&    29.96\sym{***}\\
                &                  &                  &                  &   (7.01)         &   (6.89)         &   (7.64)         \\
\cline{2-7}State FE        &       No         &       No         &       No         &       No         &      Yes         &       No         \\
State-Year FE   &       No         &      Yes         &      Yes         &       No         &       No         &       No         \\
Segment id FE   &       No         &       No         &      Yes         &       No         &       No         &      Yes         \\
\hline
N               &  186,055         &  186,054         &  181,235         &  186,055         &  186,055         &  181,236         \\
\hline\hline                 \multicolumn{7}{l}{\footnotesize Standard Errors in Parentheses Clustered at the State-Year Level. }\\                         \multicolumn{7}{l}{\footnotesize  \sym{+} \(p<0.10\), \sym{*} \(p<0.05\), \sym{**} \(p<0.01\), \sym{***} \(p<0.001\). }                 \end{tabular}\end{table}
